luajit: bump new version

LuaJIT submodule is bumped to introduce the following changes:
* tools: introduce --leak-only memprof parser option

Within this changeset the new Lua module providing post-processing
routines for parsed memory events is introduced:
* memprof/process.lua: post-process the collected events

The changes provide an option showing only heap difference. One can
launch memory profile parser with the introduced option via the
following command:
$ tarantool -e 'require("memprof")(arg)' - --leak-only filename.bin

Closes #5812

Reviewed-by: Igor Munkin <imun@tarantool.org>
Signed-off-by: Igor Munkin <imun@tarantool.org>

changelogs/unreleased/luajit-memprof-leakonly.md

+## feature/luajit
+
+* Now memory profiler parser reports heap difference occurring during
+  the measurement interval (gh-5812). New memory profiler's option
+  `--leak-only` shows only heap difference is introduced. New built-in
+  module `memprof.process` is introduced to perform memory events
+  post-processing and aggregation. Now to launch memory profiler
+  via Tarantool user should use the following command:
+  `tarantool -e 'require("memprof")(arg)' - --leak-only /tmp/memprof.bin`

src/CMakeLists.txt

@@ -65,6 +65,7 @@ lua_source(lua_sources ${LUAJIT_BINARY_ROOT}/src/jit/vmdef.lua)
 lua_source(lua_sources ${LUAJIT_SOURCE_ROOT}/tools/memprof.lua)
 lua_source(lua_sources ${LUAJIT_SOURCE_ROOT}/tools/memprof/humanize.lua)
 lua_source(lua_sources ${LUAJIT_SOURCE_ROOT}/tools/memprof/parse.lua)
+lua_source(lua_sources ${LUAJIT_SOURCE_ROOT}/tools/memprof/process.lua)
 lua_source(lua_sources ${LUAJIT_SOURCE_ROOT}/tools/utils/bufread.lua)
 lua_source(lua_sources ${LUAJIT_SOURCE_ROOT}/tools/utils/symtab.lua)
 

src/lua/init.c

@@ -125,6 +125,7 @@ extern char strict_lua[],
 	bufread_lua[],
 	symtab_lua[],
 	parse_lua[],
+	process_lua[],
 	humanize_lua[],
 	memprof_lua[]
 ;
@@ -177,6 +178,7 @@ static const char *lua_modules[] = {
 	"utils.bufread", bufread_lua,
 	"utils.symtab", symtab_lua,
 	"memprof.parse", parse_lua,
+	"memprof.process", process_lua,
 	"memprof.humanize", humanize_lua,
 	"memprof", memprof_lua,
 	NULL

luajit @ 20f79e9d

-Subproject commit fae1681dd1c117a913f99cbeed0ca2b87cf581a1
+Subproject commit 20f79e9d6356d4659d84192c55c0b3f4f46293fe